TS EAMCET 4 May 2018 Shift 2 Solved Paper

A uniform disk of mass 100 kg and radius 2 m is rotating at 1 rad / s about a perpendicular axis passing through its center. A boy of mass 60 kg, standing at the center of the disk suddenly jumps to a point which is 1 m from the center of the disk. The final angular velocity of the boy (in rad / s) is